The Bupyeong underground shopping mall, which can be seen immediately after you leave the Bupyeong Station, boasts the world's largest scale. In 2014, it was certified as having the world's largest number of stores for an underground shopping mall within a single area. It has been through rebuildings as a shopping mall for a large - scale remodeling since 1986 in the underground passageway that was used as a shelter originally. There are more than 1,400 shops here, and they are full of affordable - priced and fashionable items such as trendy fashion goods, cosmetics and accessories.